This item contains about every DOS game archive and extras (such as manuals) for them, that were available for download on HOTU and were marked as DOS games.
Downloading these files finished some time around March. Apparently, there have been no additions to HOTU since then.
HOTU changes the availability of many games somewhat frequently (like only having the BUY option, not download), so it's very hard to have a perfect dump of HOTU DOS games (and HOTU might have some games mistakenly marked DOS), but it's unlikely that more than a few games are missing that were available at the time I finished downloading them.
A few files in HOTU were corrupted or zero-size (I downloaded all of them again a few times and confirmed it), and so I removed them. Also, I checked all the zip archives for corruptions and IIRC there were none so there shouldn't be any corrupt files.
A mostly complete (HOTU isn't perfect, so I couldn't do better for now) list of the game names with the corresponding files:
Browse .zip here